D drive disappeared

[Mehdi-2026]

I have HP pavilion all in One and 😧 drive disappeared.

Right before  😧 drive  disappeared,  my C drive became full ..i freed some files on C drive and have space on C  ..C drive getting full happened before but 😧 drive never disappeared 

it is not listed under disk management

is the D drive separate  device or separate partition share the same disk drive 

How to recover D drive ?

[VikramTheGreat]

Hi @Mehdi-2026,

Welcome to the HP Support Community.
 

Thank you for posting your query. I will be glad to help you.

Thank you for posting. I understand how concerning it can be when a drive suddenly disappears, especially after the C: drive was running out of space.

To answer your question, the drive on an HP Pavilion All-in-One can be either:

• A separate partition on the same physical hard drive as the C: drive, or
• A completely separate physical drive installed in the system.

Since the drive is not appearing in Disk Management, we first need to determine whether Windows is no longer detecting the partition or whether the drive itself is no longer being detected by the hardware.

Could you please provide the following information?

• The exact HP Pavilion All-in-One model number.
• Is the drive normally used for data storage, recovery files, or both?
• Does the drive appear in File Explorer at all, or is it completely missing?
• When you open BIOS/UEFI, do you see one storage device or multiple storage devices listed?
• Have you recently received any disk-related errors, slow performance, clicking noises, or unexpected shutdowns?

To help identify whether this is a hardware or partition issue, please run HP Hardware Diagnostics:

1. Turn off the computer.
2. Power it on and immediately tap Esc repeatedly.
3. From the Startup Menu, press F2 for Diagnostics.
4. Run the Storage Test.
5. Note any failure ID or error message and post the results.

This test will help determine whether the storage device itself is healthy before attempting any recovery steps.

Also, if possible, please provide a screenshot of Disk Management showing all disks and partitions currently detected. That will help us determine whether the partition has lost its drive letter, become corrupted, or if the storage device is no longer being recognized by the system.

Once we have the model number, Storage Test results, and Disk Management screenshot, we'll be in a much better position to determine the cause and advise the safest method to recover the drive and any data stored on it.

I hope this helps.

Take care and have an amazing day!